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P0430 Diagnostic Trouble Code Discussion for August 2011

Catalyst System Low Efficiency (Bank 2)

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Trouble Ticket Help Requests for DTC P0430
Help Request Posted
1999 Land Rover Range Rover 4.0L Misfire, MIL Lamp on VIN: SALPA1247X
P0430: Cat below efficiency bank 2. First time customer came in stating check engine light and run rough. Scan for code and foung the listed codes in system. Engine have misfire while idling. Inspect spark plug wires and found arcing on spark plug. Can't seem to figure out which cylinder is miss...
August 16, 2011
2006 Toyota Sienna Limited 3.3L MIL Lamp on VIN: 5TDBA22C26
P0430: Catalyst Efficiency Below Normal (Bank 2). ... shop,only complaint is mil on. Van runs fine, scanned got codes p0420 and p0430. Did a smoke test to check for vacuum leaks and it passed. A/f readings ok. I was wondering if anyone has had cat problems on these newer vans? If so which ones it has three? A...
August 25, 2011